Ralitsa Mladenova
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View article: Harvesting Friction Energy on Zinc Oxide and Zinc Oxide/Europium Oxide Sol-Gel Catalysts for Tribocatalytic Paracetamol Degradation
Harvesting Friction Energy on Zinc Oxide and Zinc Oxide/Europium Oxide Sol-Gel Catalysts for Tribocatalytic Paracetamol Degradation Open
In the natural environment, mechanical energy is widely available as a sustainable and green energy source. In this paper, we successfully convert mechanical energy on ZnO and ZnO/Eu2O3 tribocatalysts via a friction route. Electrons were t…
View article: Effect of Gamma Irradiation on Free Radicals and the Antioxidant Properties of Walnuts
Effect of Gamma Irradiation on Free Radicals and the Antioxidant Properties of Walnuts Open
The present work represented results from a comprehensive study of free radicals and the antioxidant properties of irradiated walnuts. The effects of gamma irradiation on free radical generation and their stability, as well as on the antio…
View article: Analysis of Gamma-Irradiation Effect on Radicals Formation and on Antiradical Capacity of Horse Chestnut (Aesculus hippocastanum L.) Seeds
Analysis of Gamma-Irradiation Effect on Radicals Formation and on Antiradical Capacity of Horse Chestnut (Aesculus hippocastanum L.) Seeds Open
The irradiation by gamma-rays is a widely used technique for disinfection in the pharmaceutical and cosmetic industries. In view of growing concerns by consumers about this technique, further investigation of the effects of radiation is re…
View article: Green Synthesized Composite AB-Polybenzimidazole/TiO2 Membranes with Photocatalytic and Antibacterial Activity
Green Synthesized Composite AB-Polybenzimidazole/TiO2 Membranes with Photocatalytic and Antibacterial Activity Open
Novel AB-Polybenzimidazole (AB-PBI)/TiO2 nanocomposite membranes have been prepared using a synthetic green chemistry approach. Modified Eaton’s reagent (methansulfonic acid/P2O5) was used as both reaction media for microwave-assisted synt…
View article: Candidate-Probiotic Lactobacilli and Their Postbiotics as Health-Benefit Promoters
Candidate-Probiotic Lactobacilli and Their Postbiotics as Health-Benefit Promoters Open
Lactobacillus species are widely recognized for their probiotic potential, focusing on their mechanisms of health benefits and protection. Here we conducted an in vitro investigation of the probiotic potential with a role in microbiome hom…
View article: SYNTHESIS OF Ag-MODIFIED TiO2 SOL-GEL FILMS AND ITS APPLICATION AS PHOTOCATALYSTS FOR METHYLENE BLUE DEGRADATION
SYNTHESIS OF Ag-MODIFIED TiO2 SOL-GEL FILMS AND ITS APPLICATION AS PHOTOCATALYSTS FOR METHYLENE BLUE DEGRADATION Open
In the study, the photocatalytic activity of TiO2 films that are created by dip-coating from a sol that contained titanium (IV) isopropoxide, monoethanolamine, and 2-methoxyethanol is demonstrated. Through photo-fixation of Ag (I) ions wit…
View article: Effect of Ultraviolet Illumination on the Fixation of Silver Ions on Zinc Oxide Films and Their Photocatalytic Efficiency
Effect of Ultraviolet Illumination on the Fixation of Silver Ions on Zinc Oxide Films and Their Photocatalytic Efficiency Open
This study focuses on the fabrication and characterization of nanostructured zinc oxide films deposited on glass substrates using sol–gel dip-coating methods. The thin films are functionalized with silver ions at various Ag+ concentrations…
View article: Effect of Gamma Irradiation on Fat Content, Fatty Acids, Antioxidants and Oxidative Stability of Almonds, and Electron Paramagnetic Resonance (EPR) Study of Treated Nuts
Effect of Gamma Irradiation on Fat Content, Fatty Acids, Antioxidants and Oxidative Stability of Almonds, and Electron Paramagnetic Resonance (EPR) Study of Treated Nuts Open
Gamma irradiation has been applied as an efficient and inexpensive method for the sterilization of nuts for years. However, along with the benefits of such treatment, negative effects are possible because of the formation of reactive oxyge…
View article: Health-Related Quality of Life following Surgery for Native and Prosthetic Valve Infective Endocarditis
Health-Related Quality of Life following Surgery for Native and Prosthetic Valve Infective Endocarditis Open
Objectives: The objective of this study was to compare the long-term outcomes and health-related quality of life (HRQOL) of patients following surgery for infective native valve endocarditis (NVE) and prosthetic valve endocarditis (PVE). M…
View article: Effects of Gamma Irradiation on Free Radical Components, Phenolic Content and Antioxidant Activity of Beebread
Effects of Gamma Irradiation on Free Radical Components, Phenolic Content and Antioxidant Activity of Beebread Open
Antiradical activity and free radicals before and after gamma-treatment of beebread were investigated by Electron Paramagnetic Resonance (EPR) spectroscopy. A narrow signal the intensity of which increased with the dose was assigned to O-c…
View article: High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant
High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant Open
Samarium doped (0.5–5 at.%) ZrO2 films with high surface and optical quality were obtained by sol–gel method using inorganic zirconium precursor. The morphology and roughness of the samples were investigated by scanning electron microscopy…
View article: Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties
Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties Open
Zinc oxide arouses considerable interest since it has many applications—in microelectronics, environmental decontaminations, biomedicine, photocatalysis, corrosion, etc. The present investigation describes the green synthesis of nanosized …
View article: New Materials Based on Sucrose for EPR Spectroscopic Study
New Materials Based on Sucrose for EPR Spectroscopic Study Open
View article: Study of gamma radiation effects on free radicals generation and antioxidant potential of beebread
Study of gamma radiation effects on free radicals generation and antioxidant potential of beebread Open
Anna A. Oleshkevich, Specific features of change in enzymate activity in
View article: Surface and Morphological Features of ZrO2 Sol-Gel Coatings Obtained by Polymer Modified Solution
Surface and Morphological Features of ZrO2 Sol-Gel Coatings Obtained by Polymer Modified Solution Open
Thin, homogeneous ZrO2 films were obtained by spin coating method from ZrOCl2 8H2O solution, modified with polyethylene glycol (PEG) (Mw = 400). The films have thickness of 80 nm and refractive index of about 1.45, which varied with the am…